Micro Final Exam

I

100

Of the following specimens, which should be rejected for anaerobic work-up?

• cerebrospinal fluid
• abdominal abscess
• necrotic tissue
• wound swab from epidermal layer

Swab from epidermal layer- anaerobes don't live there!

200

An important test for identifying Neisseria is...

Production of oxidase

300

What is in the media that will specifically help in the identification of E. coli O157:H7

Sorbitol MacConkey SMAC

400

70. The MIC is the ______  of a drug that is required to inhibit growth of a microbe.

Lowest concentration

Highest concentration

Standard dose

Lowest concentration

500

An agent responsible for pneumonia which is a gram negative bacillus, produces mucoid colonies, is encapsulated and ferments lactose is:

Klebsiella pneumoniae

am

100

1. The ability of an organism to cause disease is called?
   1. potency
   2. toxicity
   3. pathogenicity
   4. “badnicity”

Pathogenicity

200

Name that organisms:

Shipping Fever in cattle / “Cat Scratch” in humans

Pasteurella

300

Large, square ended rod, "Boxcar"

Bacillus

400

A blue color of the citrate media means the bacteria used citrate as its sole source of _________.

carbon

500

Identify the following organism genera: Curved gram negative rod “sea gulls”, oxidase positive, grows at 42°C in a high nitrogen concentration atmosphere.

Campylobacter

on

100

Proteus sp exhibit what kind of characteristic growth?

hint: starts with an S.

Swarming

200

Each microbiology lab has a duty report certain tracked diseases to what agency?

Hint: We looked at the reports for HIV and Chlamydia

STH State Health Lab

300

Streptococci viridans has what hemolysis?

Alpha

400

42. Most bacterial cultures are “streaked for isolation.” Which of the following specimens is streaked to obtain a “colony count?”

Urine

500

A culture of Haemophilus influenzae was growing with beta-hemolytic S. aureus in an endotrach specimen. __________________phenomenon might be observed on the sheep blood agar plate because of the synergistic relationship of these two organisms.

Satelitism

my

100

Which organism is CAMP test positive?

Group B streptococcus or Streptococcus agalactiae

200

Acute Rheumatic Fever may be the sequelae of pharyngitis caused by which organism:

Streptococcus pyogenes or group A strep.

300

Which of the following would be identified using a catalase test, hemolysis patterns on SBA, and disk testing?

1. Mycobacteria
2. Neisseria
3. Corynebacteria
4. Streptococci

Streptococci

400

The organism that requires both X and V factor to grow is?

Hemophilus influenzae

500

Staphylococci aureus can be differentiated from Staphylococci epidermidis on the basis of which important reaction

coagulase

way

100

The causative agent of whooping cough is?

Bordatella pertusis

200

Lancefield grouping and hemolytic patterns are used to recognize and identify what organisms?

Streptococci

300

Which of the following is the number one VECTOR disease in the USA caused by a spirochete bacterium?

1. Syphilis
2. Lyme Disease
3. Rocky Mountain Spotted Fever
4. Walking Pneumonia

Lyme

400

Which of the following are the only bacteria that form spores?

1. Bacteroides and Klebsiella
2. Shigella and Salmonella
3. Clostridium and Bacillus
4. Pseudomonas and Corynebacterium

Bacillus and Clostridium

500

Gas gangrene is caused by what organism

Clostridium perfringens